Search results

Simulated and real data are used to evaluate the proposed method.
The impact of multipath effects is mainly found in the original observation data and the positioning results given by data post-processing.
Analysis and comparison of simulation data Consider a data model represented by: , where et is the normal white noise sequence.
Taking 1500 sample data from each model, we attempted to perform denoising and signal trend extraction using wavelets, EMD, and multi-scale wavelet decomposition and EMD for noise reduction and signal trend extraction.
The data sampling interval was 10 s, the satellite closure elevation angle was 130°, and the experimental data record the laboratory bench rising and falling by 10.

b) Retransmission, caused by data collision, loses and so on, is also a source of energy waste.
c) Nodes monitor and receive data which is sent to other nodes, result to unnecessary energy waste.
In this article, we optimize the S-MAC protocol in the side of channel competition and data transmission.
After the node, who own the channel, sending the data, recalculating and setting the priority again.
New frame will replace the original data whose position is near to the head of queue.

Analyze the numerical simulation values like coefficient of lift, coefficient of Drag, Lift, Drag, and Energy parameters with wind tunnel data to predict accuracy for both the airfoils.
Through the selected public literature standard airfoil data and designed airfoil data has been chosen, the geometry was created in the GAMBIT and also the meshing by selecting the suitable c-grid and rectangular grid for the better flow analysis in the FLUENT.
The percent error for the design and referred analysis data was approximately 4.59% can see the plot 29 to 30.
These design airfoil results are well matching with the literature experimental data also.
Moreover, Fluent and gambit provides a better correlation with theoretical data for coefficient values like lift, drag and their coefficients prediction.

Subsequently, the research paper discusses the main social impacts of roads to include trip reduction cost, noise impact and accident impact. 3.1.
Trip Reduction Cost The main objective of constructing new road is to reduce the trip distance and time.
To quantify the accident costs for road projects, Nasser (2016) studied this dilemma through preparing questionnaires, collecting statistical data and making analyses.
Table 1: Road accident costs in Egypt (Nasser, 2016) Accident Degree The value of the accident cost [L.E] Fatalities 5,964,000 Injuries 612,500 Property damage only 5,964 Real Case Study The research discusses and analyzes a real case study of a new free road in Egypt, constructed parallel (approximately the same length) to an existing road to decrease the crowded traffic flow with the following data Table 2.
So, the total cost savings of trip time reduction have an average value of +833 Billion L.E during project life time, where the average number of passengers per trip equals three passengers.

A cellular dislocation structure can form only at very high cold working reductions of greater than 90 %.
Primary treatment of the material with a high reduction can be carried out efficiently in region I.
In accordance with [11], Fig. 3 presents these curves for several materials according to the results obtained by a number of investigators; the data on the temperature dependence of density are compared with the main factors controlling the sintering process (Fig. 4).
The possibility of formation of shear stresses sufficient for the initiation of dislocational mechanism of plastic deformation is indicated, in particular, by the data in [26].
A high rate of shaping the porous blank, leading to a reduction in porosity, is ensured only with the simultaneous occurrence of the diffusion processes under stresses and dislocation creep.

Data were subjected to a one-way ANOVA using the SAS™ software (SAS Institute Inc 1989) to test for the main effect of NaCl addition (across all NO3 levels) and for the effects of NO3--N addition within each level of NaCl.
The analyses of shoots and roots fresh weights were similar to those for the dry weights (data not shown).
[31] Radin JW, Parker LL, Sell CR (1978) Partitioning of sugar between growth and nitrate reduction in cotton roots.
[44] Nagababu E, Ramasamy S, Abernethy DR, Rifkind JM (2003) Active nitric oxide produced in the red cell under hypoxic conditions by deoxyhemoglobin-mediated nitrite reduction.
[47] Meloni DA, Gulotta MR, Martínez CA, Oliva MA (2004) The effects of salt stress on growth, nitrate reduction and proline and glycinebetaine accumulation in Prosopis chloride and sodium sulphate.

In order to analyze the dynamic characteristic of servo hydraulic system and optimal design parameters, cost reduction and shortened product development cycles.
Parameter of system performance name Count value name Count value supply oil pressure 20.23 Open-loop gain （rad/s） 34 The rated flow Q(L/min) 100 Servo valve resonant frequency (rad/s) 340 Maximum load torque T（N.m） 105 Motor damping coefficient 0.2 Feedback sensor gain 0.19 Motor displacement （） Oil density 870 Hydraulic motor and load of total transmission inertia（） Liquid equivalent elastic modulus volume Servo valve damping coefficient 0.7 Servo valve gain Motor resonance frequency (rad/s) 180 The data and the table 1 into type (4) have to system for digital closed-loop transfer function (5) System for digital open-loop transfer function (6) System of digital simulation Stability analysis of the system.

From the simulation, obtains the data of stress, the distribution of stress and temperature in the forming process, concluding that the best condition of forming 6061 control arm of automobile is under the temperature 400 , and rate 3 mm/s.
Introduction With the weight and emission reduction and the constant improvement of the security requirement, magnesium alloy becomes the ideal light metal material for its light weight, high specific strength and specific stiffness, good heat dissipation and damping vibration, excellent electromagnetic shielding and its low cost [1-2].
As shown in Fig.1, the billet of the control arm was made with the liquid die forging technology and according to the parts manufacturability analysis, taking saving die material and equipment, reduce energy consumption, improve the efficiency of production into consideration, referring to the relevant data, making sure the deformation process of a forging forming and then removed with machining and improve the inner hole.

In this paper, the pulse-induced acoustic sound in laser cutting is collected, and the data processing is performed with wavelet denoising and time-frequncy analyzing.
Fig.1 Detection device of pulse-induced acoustic sound Where the measuring range of the microphone is 20 ~ 16000Hz, and the sampling frequency is 90kHz.After wavelet noise reduction[3,4], the collected pulse-induced acoustic sound is analysed in time-frequency domain.The impact of pulse energy, frequency and cutting speed is researched respectively,the detailed results will be discussed in the later.
The used sample data are statistical value of several experiments.

In recent years, many researchers have concentrated on the influence of environmental conditions on structural modal frequencies based on monitoring data.
Other researchers who studied the relationship between modal parameters and environmental temperature based on monitoring data of CSB include Li et al. [4], Fan et al. [5] and so on.
However, this case enables us to grasp the limits of the change in frequency and can provide data for FE model updating.
In every trigger, 4096 response data points are collected, so the signal’s duration is 32s, which is enough for the response to die away to minimize the leakage.
For each recording, careful assessment of measured data and the resulting FRF must be undertaken, so as not to acquire poor data with the consequence of loss of quality in the modal parameters’ estimation.